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DP 21-4000A treadmill Parts
Here are the diagrams and repair parts for DP 21-4000A treadmill, as well as links to manuals and error code tables, if available.
By Schematic
SELECT DIAGRAM
Browse Parts for 21-4000A Fitness & Exercise
Motor and walking belt assembly diagram
Mtr/mnt Asm
Part #39355800
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Arm, Cushion Righthand
Part #N/P
The manufacturer no longer makes this part, and there's no substitute part
Motor and walking belt assembly diagram
Washer
Part #26006300
The manufacturer no longer makes this part, and there's no substitute part
Control panel diagram
Lock Nut
Part #25001500
The manufacturer no longer makes this part, and there's no substitute part
Bolt
Part #22008900
The manufacturer no longer makes this part, and there's no substitute part
Motor and walking belt assembly diagram
Motor
Part #37035400
The manufacturer no longer makes this part, and there's no substitute part
Motor and walking belt assembly diagram
Pivot Rod
Part #31184500
The manufacturer no longer makes this part, and there's no substitute part
Control panel diagram
Wire Harns A
Part #39312300
The manufacturer no longer makes this part, and there's no substitute part
Motor and walking belt assembly diagram
Head Bolt
Part #22022700
The manufacturer no longer makes this part, and there's no substitute part
Handrail
Part #30446116
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for treadmills
Choose a symptom to see related treadmill repairs.
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…
Main causes: damaged walking belt, improper belt tension, bad roller bearing…
Main causes: faulty sensors, wiring failure, bad control console…
Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…
Main causes: bad control console, wiring failure, bad motor control board…
Main causes: rear roller out of alignment, damaged walking belt, bad roller…
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…
Repair guides for treadmills
These step-by-step repair guides will help you safely fix what’s broken on your treadmill.
How to replace a treadmill walking belt
A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…
Repair time and Difficulty
45 minutes or less
How to replace a treadmill walking board
A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…
Repair time and Difficulty
30 minutes or less
How to replace a treadmill drive motor
A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…
Repair time and Difficulty
15 minutes or less
Effective articles & videos to help repair your fitness & exercise
Use the advice and tips in these articles and videos to get the most out of your treadmill.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
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